BMW G20 M340iX G22 M440iX X3 G01 M40iX Bare Engine B58D B58B30B 49k, WARRANTY

Warranty and technical condition of the part

The engine is sold with a 90-day warranty.

The power unit was tested before removal and is in full working order.

Listing details

The offer applies to a bare engine.

The engine is sold without accessories (e.g. alternator, starter motor, manifolds, injectors, turbocharger, etc.).

BMW G20 M340ix G22 M440ix X3 G01 M40ix Bare Engine Block B58D B58B30B is a used, gasoline engine block from the B58 family, designed for modern BMW models with xDrive. This is a proposition for users seeking a technically advanced unit with a sporty character, prepared as a base for further equipment installation.

Specifications and technical data

• SKU: 5A42E06
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 5A42E06
• Substitutable numbers: 5A42E06, 11005A42E06, 2468595, 11002468595
• Fuel type: Petrol
• Number of cylinders: 6
• Part type: Engine Long Block
• Category: Engines
• Engine code: B58D B58B30B
• Mileage: 49 000

Technical Characteristics of the B58 Block

The offered block belongs to the B58 engine family, used in dynamic versions of BMW 3 Series G20, 4 Series G22, and X3 G01 in M Performance variants. The unit features an inline-six cylinder configuration, ensuring characteristic smooth operation and even power delivery. This generation of the B58 gasoline engine was designed for high efficiency, stable performance under load, and durability reserves suitable for sporty and highway applications.

Purpose and Application in BMW Models

The Bare Engine Block B58D B58B30B is suitable as a base for overhaul, swap, or professional conversion in models such as BMW G20 M340ix, G22 M440ix, and X3 G01 M40ix. By retaining the factory architecture of the M Performance unit, the block allows for:

• restoring original performance in case of failure of the existing engine,
• maintaining compatibility with the factory electronics and equipment of the specific model,
• building a robust base for modifications within the permissible parameters of this B58 generation.

The unit, supplied as a bare block, requires the transfer of equipment from the existing engine or the use of new components compatible with the B58D / B58B30B code.

Condition, Mileage, and Operational Potential

The engine is a used part from a dismantled vehicle. The declared mileage is relatively low for this class of unit, which translates to favorable potential for further operation after proper installation and initial servicing. The B58 inline-six is known for its solid block and cylinder head construction, which, with proper maintenance, contributes to a long service life.

Before installation, standard preparatory steps are recommended, such as checking seals, verifying compression, and replacing consumables according to manufacturer procedures. This approach allows for full utilization of the B58 construction's durability reserve.

Benefits of Choosing a Used BMW Engine Block

Purchasing a used B58 block for a BMW G20, G22, or X3 G01 is a solution that can significantly reduce repair costs compared to a brand-new unit. Additionally:

• you retain the original engine specification intended for the M340ix, M440ix, or M40ix versions,
• you minimize interference with the electrical system and control units, as the base remains compliant with the factory design,
• you shorten repair time compared to a complete rebuild of a damaged block.

If you want to better understand how to safely choose dismantled units, an expert guide Why Buy Used Gearboxes and Engines – Facts Instead of Myths will be helpful, describing, among other things, selection by OEM numbers and practical cost calculation examples.

BMW Engines – Selecting the Right Unit

When selecting this block, matching the engine code and the vehicle's model version is crucial. In practice, this means verifying compatibility with your existing xDrive drivetrain configuration, car year, and installed equipment. If in doubt, it is advisable to consult with a workshop specializing in the new generation of BMW B58 units for installation, which will facilitate the correct transfer of auxiliary components and control unit configuration.

If you are also looking for other BMW engines for various models of this brand, check out our dedicated category BMW Engines, where you will find a wide selection of dismantled units.

How to Ensure Long Life for a Used Engine

To maximize the potential of this unit, after installation, it is advisable to follow a "soft operational start" procedure – gentle driving, regular oil level checks, and monitoring of operating parameters. It is also good practice to use high-quality oils and fuel, which contribute to the stable operation of the inline-six and reduce the risk of premature wear of internal components.

Additional practical tips on operating dismantled parts can be found in the guide How to Extend the Lifespan of Used Car Parts?, which describes, among other things, recommendations for gasoline engines and methods of their maintenance.